Abstract 11168: Race Independently Predicts Echocardiographic Findings in NCAA Division I College Athletes
Background: Cardiac structural adaptation in athletes is influenced by many factors including gender, body surface area (BSA), and type of sport. The influence of race on specific echocardiographic parameters has not been fully studied in NCAA Division I athletes. We hypothesized interventricular septal thickness during diastole (IVSd), left ventricular posterior wall thickness during diastole (LVPWT), and left ventricular end diastolic internal dimension (LVIDd) would be associated with race.
Methods: 1302 NCAA Division I athletes (Age: 19+1.3 years, 59% Male, 28.6% African American) from three universities had preseason screening echocardiograms performed from 2007-2012. 16 varsity sports were represented. Race data was collected by self-identification, and only White and African American races were analyzed. Echocardiographic images were read and interpreted by board certified cardiologists. Partial Spearman correlations and multivariate regression models adjusting for age, gender, BSA, race and type of sport were performed.
Results: In a partial Spearman correlation, race was correlated with IVSd (p<.0001), LVPWT (p<.000008) and LVIDd (p<.0000001) when adjusting for age, gender, and BSA. In a multivariable linear regression adjusting for age, gender, BSA, and type of sport, African American race was an independent predictor of IVSd (p<.002, B=.365 mm), LVPWT (p<.001, B=.414 mm) and LVIDd (p<.0000001, B=-1.957 mm).
Conclusion: In NCAA Division I athletes, African American race was an independent predictor of IVSd, LVPWT, and a negative predictor of LVIDd. In the regression model for LVPWT, race and gender coefficients were nearly equal in magnitude and statistical significance. Overall, BSA was the most significant predictor of all three echocardiographic measurements. Mechanisms underlying these findings and clinical correlation require further study.
- © 2013 by American Heart Association, Inc.